807
FNCA52 TJSJ 250730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST MON MAY 25 2026
DISCUSSION
LITTLE TO NO RAINFALL IS ANTICIPATED ACROSS THE SOUTHERN SECTIONS
OF PUERTO RICO TODAY. DRIER AIR IS ALSO EXPECTED TO FILTER INTO
THE REGION, ALLOWING RELATIVE HUMIDITY VALUES TO DROP INTO THE
UPPER 40S TO LOW 50S. WIND SPEEDS MAY REACH AROUND 16 TO 25 MPH,
WITH HIGHER GUSTS. FURTHERMORE, A WIND ADVISORY IS IN EFFECT
THROUGH THIS EVENING. KBDI VALUES IN CABO ROJO REMAIN ABOVE
CRITICAL FIRE WEATHER THRESHOLDS. ADDITIONALLY, THE 7-DAY PERCENT
OF NORMAL RAINFALL ACROSS THE SOUTHERN COASTAL PLAINS IS BELOW
25%, WITH SOME LOCATIONS EVEN BELOW 5%. THEREFORE, CONDITIONS
WILL BE FAVORABLE FOR THE SPREAD OF WILDFIRES ALONG THE SOUTHERN
COASTAL PLAINS OF PUERTO RICO. A FIRE DANGER STATEMENT (RFDSJU)
HAS BEEN ISSUED.
PRZ014-252000-
SOUTHEAST COASTAL PLAINS-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 40 40
TEMP (24H TREND) 89 (+2) 72 (-2) 88
RH % (24H TREND) 48 (-9) 93 (+8) 57
WIND 20FT/EARLY(MPH) E 23 G34 E 23 G34 E 14 G23
WIND 20FT/LATE(MPH) E 25 G36 E 13 E 14 G23
MIXING HGT(FT-AGL/MSL)5720 4330
TRANSPORT WND (MPH) E 21 E 21
VENT RATE (KT-FT) 102960 77940
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-252000-
SOUTHERN HILLS-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 20
TEMP (24H TREND) 86 (+4) 69 (-2) 85
RH % (24H TREND) 57 (-14) 99 (+9) 67
WIND 20FT/EARLY(MPH) E 23 E 24 E 16
WIND 20FT/LATE(MPH) E 25 E 16 E 16
MIXING HGT(FT-AGL/MSL)6440 4870
TRANSPORT WND (MPH) E 18 E 21
VENT RATE (KT-FT) 103040 87660
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-252000-
NORTH COASTAL PLAINS-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 40
TEMP (24H TREND) 87 (0) 72 (-2) 87
RH % (24H TREND) 60 (-8) 97 (+6) 67
WIND 20FT/EARLY(MPH) E 24 E 26 E 17
WIND 20FT/LATE(MPH) E 25 E 16 E 18
MIXING HGT(FT-AGL/MSL)5840 4070
TRANSPORT WND (MPH) E 22 E 21
VENT RATE (KT-FT) 110960 73260
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-252000-
NORTHERN HILLS-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 20 60
TEMP (24H TREND) 87 (+2) 70 (-1) 85
RH % (24H TREND) 58 (-13) 98 (+3) 69
WIND 20FT/EARLY(MPH) E 21 E 26 E 16
WIND 20FT/LATE(MPH) E 25 E 12 E 16
MIXING HGT(FT-AGL/MSL)6960 5120
TRANSPORT WND (MPH) E 17 E 17
VENT RATE (KT-FT) 104400 76800
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-252000-
WEST COAST-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 50
TEMP (24H TREND) 90 (+1) 72 (0) 89
RH % (24H TREND) 57 (-9) 94 (+4) 65
WIND 20FT/EARLY(MPH) E 24 E 26 E 16
WIND 20FT/LATE(MPH) E 24 E 14 E 16
MIXING HGT(FT-AGL/MSL)5470 4350
TRANSPORT WND (MPH) E 14 E 16
VENT RATE (KT-FT) 65640 60900
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-252000-
EASTERN INTERIOR-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 60 50
TEMP (24H TREND) 86 (+3) 70 (-3) 85
RH % (24H TREND) 63 (-8) 100 (+9) 70
WIND 20FT/EARLY(MPH) E 24 E 26 E 17
WIND 20FT/LATE(MPH) E 26 E 18 E 17
MIXING HGT(FT-AGL/MSL)6460 3970
TRANSPORT WND (MPH) E 20 E 21
VENT RATE (KT-FT) 109820 71460
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-252000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 50 60
TEMP (24H TREND) 82 (+4) 67 (-4) 81
RH % (24H TREND) 67 (-10) 100 (+7) 75
WIND 20FT/EARLY(MPH) E 23 E 25 E 14
WIND 20FT/LATE(MPH) E 25 E 14 E 14
MIXING HGT(FT-AGL/MSL)4640 2930
TRANSPORT WND (MPH) E 22 E 23
VENT RATE (KT-FT) 88160 58600
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-252000-
CENTRAL MOUNTAIN RANGE-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 20 50
TEMP (24H TREND) 86 (+6) 67 (-2) 84
RH % (24H TREND) 58 (-17) 99 (+5) 70
WIND 20FT/EARLY(MPH) E 20 E 21 E 11
WIND 20FT/LATE(MPH) E 21 E 10 E 11
MIXING HGT(FT-AGL/MSL)7680 5840
TRANSPORT WND (MPH) E 13 E 16
VENT RATE (KT-FT) 84480 81760
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-252000-
CAYEY MOUNTAIN RANGE-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60 60
TEMP (24H TREND) 82 (+3) 68 (-3) 80
RH % (24H TREND) 66 (-11) 100 (+5) 77
WIND 20FT/EARLY(MPH) E 23 E 23 E 13
WIND 20FT/LATE(MPH) E 24 E 12 E 13
MIXING HGT(FT-AGL/MSL)5460 3250
TRANSPORT WND (MPH) E 22 E 22
VENT RATE (KT-FT) 103740 61750
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-252000-
VIEQUES-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 60
TEMP (24H TREND) 87 (+1) 75 (-1) 86
RH % (24H TREND) 62 (-2) 92 (+8) 65
WIND 20FT/EARLY(MPH) E 24 E 25 E 20
WIND 20FT/LATE(MPH) E 25 E 21 E 19
MIXING HGT(FT-AGL/MSL)4150 3080
TRANSPORT WND (MPH) E 25 E 28
VENT RATE (KT-FT) 91300 73920
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-252000-
CULEBRA-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 60
TEMP (24H TREND) 89 (+2) 75 (-2) 88
RH % (24H TREND) 61 (-3) 93 (+9) 62
WIND 20FT/EARLY(MPH) E 24 E 25 E 20
WIND 20FT/LATE(MPH) E 25 E 23 E 19
MIXING HGT(FT-AGL/MSL)4200 3180
TRANSPORT WND (MPH) E 26 E 28
VENT RATE (KT-FT) 96600 76320
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-252000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 0 20
TEMP (24H TREND) 91 (+3) 73 (-1) 90
RH % (24H TREND) 45 (-13) 89 (+5) 53
WIND 20FT/EARLY(MPH) E 24 G34 E 27 G37 E 19 G28
WIND 20FT/LATE(MPH) E 26 G37 E 17 E 19 G28
MIXING HGT(FT-AGL/MSL)5620 4480
TRANSPORT WND (MPH) E 22 E 23
VENT RATE (KT-FT) 106780 89600
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-252000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 50
TEMP (24H TREND) 85 (0) 75 (-2) 85
RH % (24H TREND) 66 (+1) 91 (+9) 67
WIND 20FT/EARLY(MPH) E 24 E 26 E 20
WIND 20FT/LATE(MPH) E 26 E 23 E 19
MIXING HGT(FT-AGL/MSL)4060 3220
TRANSPORT WND (MPH) E 28 E 28
VENT RATE (KT-FT) 97440 77280
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-252000-
ST CROIX-
330 AM AST MON MAY 25 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 60
TEMP (24H TREND) 86 (0) 75 (-1) 86
RH % (24H TREND) 67 (+1) 94 (+10) 67
WIND 20FT/EARLY(MPH) E 24 E 26 E 19
WIND 20FT/LATE(MPH) E 26 E 21 E 19
MIXING HGT(FT-AGL/MSL)4350 3380
TRANSPORT WND (MPH) E 25 E 26
VENT RATE (KT-FT) 95700 77740
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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